pro·​na·​tor ˈprō-ˌnā-tər How to pronounce pronator (audio)
: a muscle that produces pronation

Examples of pronator in a Sentence

Recent Examples on the Web Last season, Ohtani attempted to return to pitching duties again, but lacked velocity – along with consistency and command – in each of his first two starts before being shut down for the rest of the season as a pitcher because of strain to the flexor pronator mass near his right elbow. Jack Harris, Los Angeles Times, 19 May 2021 McCullers, sidelined for the first 4½ months of last season while rehabbing from a right flexor pronator strain, noticed soreness after a bullpen session last week. San Francisco Chronicle, 22 Feb. 2023 Warren, who missed nearly two months on the injured list with a right flexor pronator strain, has yielded 11 hits and seven runs (four earned) in 7 1/3 innings with 10 strikeouts and seven walks. The Enquirer, 11 Sep. 2022 McCullers suffered the flexor pronator muscle strain – an injury the forearm of his pitching arm – during the clinching win over the White Sox in the American League Division Series. Matt Young, Chron, 23 Feb. 2022 Warren, sidelined since July 4 with a right pronator strain, has allowed 26 hits and 22 runs in 28 2/3 innings this season (6.91 ERA). The Enquirer, 16 Aug. 2022 Right-hander Luke Weaver has a mild flexor pronator strain, Lovullo said, framing the diagnosis as relatively good news. Nick Piecoro, The Arizona Republic, 12 Apr. 2022 McCullers said the flexor pronator muscle strain in his right arm usually means six to eight weeks before even picking up a ball. Stephen Hawkins, ajc, 25 Oct. 2021 The Astros did not provide much new information on the health of ace Lance McCullers Jr., who was left off the ALCS roster because of a flexor pronator muscle strain in his right arm., 24 Oct. 2021 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'pronator.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1615, in the meaning defined above

Time Traveler
The first known use of pronator was in 1615

Dictionary Entries Near pronator

Cite this Entry

“Pronator.” Dictionary, Merriam-Webster, Accessed 25 Sep. 2023.

Medical Definition


pro·​na·​tor ˈprō-ˌnāt-ər How to pronounce pronator (audio)
: a muscle that produces pronation
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